AlvarezsaurusvsDracorex
Dracorex has a higher Length (4 vs 2 m), while Alvarezsaurus has a higher Earliest Appearance (89 vs 66 Ma), while Alvarezsaurus has a higher Temporal Midpoint (87 vs 66 Ma).
Physical Characteristics
2
Length
4
N/A
Weight
N/A
carnivorous
Diet
herbivorous
Classification
small theropod
Type
pachycephalosaur
Temporal Range
Late Cretaceous
Era
Late Cretaceous
89
Earliest Appearance
66
85
Latest Appearance
66
4
Time Span
N/A
87
Temporal Midpoint
66
Discovery
1,991
Year Discovered
2,006
Argentina
Discovery Location
USA
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Data sourced from World Dinosaur Dataset (Zenodo) (CC-BY 4.0).